Zaffre (also spelt Zaffer), a prescientific, or alchemical substance, is a deep blue pigment obtained by roasting cobalt ore, and is made of either an impure form of cobalt oxide[1] or impure cobalt arsenate. During the Victorian Era, zaffre was used to prepare smalt and to stain glass blue.[2]

Zaffre
 
About these coordinates     Color coordinates
Hex triplet#0014A8
sRGBB (r, g, b)(0, 20, 168)
HSV (h, s, v)(233°, 100%, 66%)
CIELChuv (L, C, h)(21, 81, 265°)
SourceX11
ISCC–NBS descriptorDeep blue
B: Normalized to [0–255] (byte)

The first recorded use of zaffer as a color name in English was sometime in the 1550s (exact year uncertain).[3]

See also

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References

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  1. ^ ClayArt
  2. ^ Mackenzie's Five Thousand Receipts in All the Useful and Domestic Arts , 1845, "Pottery: Black glazing p 369.
  3. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 207; Color Sample of Zaffer: Page 109 Plate 43 Color Sample D11